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B=(this.options.encoding)?"; charset="+this.options.encoding:""; this.setHeader("Content-type","application/x-www-form-urlencoded"+B);}if(this.options.initialize){this.options.initialize.call(this);}},onStateChange:function(){if(this.transport.readyState!=4||!this.running){return ; }this.running=false;var A=0;try{A=this.transport.status;}catch(B){}if(this.options.isSuccess.call(this,A)){this.onSuccess();}else{this.onFailure();}this.transport.onreadystatechange=Class.empty; },isSuccess:function(A){return((A>=200)&&(A<300));},onSuccess:function(){this.response={text:this.transport.responseText,xml:this.transport.responseXML}; this.fireEvent("onSuccess",[this.response.text,this.response.xml]);this.callChain();},onFailure:function(){this.fireEvent("onFailure",this.transport);},setHeader:function(A,B){this.headers[A]=B; return this;},send:function(A,C){if(this.options.autoCancel){this.cancel();}else{if(this.running){return 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